This page explains how John R. R. Miller (USATT# 18162)'s rating went from 1461 to 1408 at the Club JOOLA December Open held on - 13 Dec 2009. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.